Medicare Administrative Contractors

Implementation of the Medicare Administrative Contractors (MAC)

With the new MAC structure, there are 15 contractors by jurisdiction responsible for processing Part A and B claims. Four of the A/B MAC providers will overlap responsibility for handling Home Health and Hospice claims. The final four MAC plans will be the Durable Medical Equipment contractors.

A/B MAC Jurisdictions Maps

A map illustrating the current Medicare Administrative Contrator Jurisdictions

Websites for the Medicare Administrative Contractors (MAC)

Website links to your MACs. Obtain information on active LCDs and other billing and coding updates

Carrier Advisory Committee (CAC)

The CAC acts as a formal mechanism for physicians in the state to be informed about and to participate in the development of Local Coverage Determinations (LCD) in an advisory capacity, a mechanism to discuss and improve administrative policies
that are within carrier discretion and a forum for information exchange between carriers and physicians. To view a current list of ENT CACs. To obtain contact information for your CAC, email

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Business of Medicine Workshops

Practice Management Workshops

Workshops held in cities nationwide will help otolaryngologists, their staff, and other healthcare professionals code correctly, learn risk reduction strategies, and organize business systems.

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